Fix CSI + HPA sequence

This commit fixes `HPA` character, which is `U+0060` according to
https://vt100.net/docs/vt510-rm/HPA.html, but not `U+0027`.

Author: deathaxe

pyte/escape.py

@@ -149,4 +149,5 @@
 DECSTBM = "r"
 
 #: *Horizontal position adjust*: Same as :data:`CHA`.
-HPA = "'"
+HPA = "`"
+

tests/test_stream.py

@@ -332,3 +332,31 @@ def test_byte_stream_select_other_charset():
     # c) enable utf-8
     stream.select_other_charset("G")
     assert stream.use_utf8
+
+
+def test_csi_cha():
+    screen = pyte.Screen(10, 2)
+    stream = pyte.Stream(screen)
+    # before
+    assert screen.cursor.x == 0
+    assert screen.cursor.y == 0
+    assert screen.display[0] == "          "
+    # set cursor to column absolute
+    stream.feed("\x9b4`text")
+    assert screen.cursor.x == 7
+    assert screen.cursor.y == 0
+    assert screen.display[0] == "   text   "
+
+
+def test_csi_hpa():
+    screen = pyte.Screen(10, 2)
+    stream = pyte.Stream(screen)
+    # before
+    assert screen.cursor.x == 0
+    assert screen.cursor.y == 0
+    assert screen.display[0] == "          "
+    # set cursor to column absolute
+    stream.feed("\x9b4`text")
+    assert screen.cursor.x == 7
+    assert screen.cursor.y == 0
+    assert screen.display[0] == "   text   "